. >>> a warning tonight from defense secretary chuck hagel to russia. don't do anything to escalate tensions in ukraine. the country's ousted president is believed to be under russian protection in moscow. meanwhile pro russian protesters took over government buildings in ukraine's coastal region. meeting with nato allies in belgium, hagel says the u.s. is watching the russian military exercise at the ukraine border very closely. >>> so far north korea is refusing to explain why it fired four short range missiles today. those missiles were fired from a mountain site just north of the border with south korea. the launches come days after the beginning of the annual joint u.s./south korea military exercises. in the past north korea blasted those exercises as preparation for war. >>> you may precede the nutrition label when you slop for food -- read the nutrition label when you shop for food in the store, but now for the first time in 20 years the food and drug administration wants to give them a makeover, but the proposal to change nutrition labels could